作业帮is和do的区别每次我做英语作业提疑问句,我总是不知道改用is开头还是do开头,这个该怎么区别呀
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is和do的区别每次我做英语作业提疑问句,我总是不知道改用is开头还是do开头,这个该怎么区别呀
is和do的区别
每次我做英语作业提疑问句,我总是不知道改用is开头还是do开头,这个该怎么区别呀
is和do的区别每次我做英语作业提疑问句,我总是不知道改用is开头还是do开头,这个该怎么区别呀
is是be动词.
be动词包括：am ,is ,are.
如果把一个句子变成疑问句,首先要看这个句子的动词是什么.
如果句中有be动词,直接把be动词提前.
例如：
This is a pen.有be动词,直接提前,就是Is this a pen?
They are eating apples.Are they eating apples?
如果句中没有be动词,而是实意动词,就得借助于助动词do 或 does 提问.
例如：
They had an oral english class yesterday.
had 是实意动词.借助助动词提问：Did they have an oral english class yesterday?
had 是过去式,所以用did 提问.变为疑问句的时候动词had 要还原为have.
He goes to school by bus everyday.go 是实意动词,就得借助助动词does提问.变为：Does he go to school by bus everyday?
he 是第三人称单数,所以用does 提问,疑问句中goes还原为go
记住，简单来说，英语中只有两种句型：主谓宾 (实意动词所在的句子) 和 主系表（系动词所在的句子）。
而动词的分类可以简单为 实意动词 和 be动词 两种，实意动词指有实际意义的词，比如：like do want leave ... ； 而be 动词就是am is are was were 。
主谓宾的句子变疑问句要提助动词 do does did has have wi...
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记住，简单来说，英语中只有两种句型：主谓宾 (实意动词所在的句子) 和 主系表（系动词所在的句子）。
而动词的分类可以简单为 实意动词 和 be动词 两种，实意动词指有实际意义的词，比如：like do want leave ... ； 而be 动词就是am is are was were 。
主谓宾的句子变疑问句要提助动词 do does did has have will would 以及情态动词can could may 等，比如：I like singing.可变为 Do you like singing? He left at 9 pm. 可变为 Did he leave at 9 pm? I can di it. 可变为 Can you do it ?
主系表的句子变疑问句直接提be 动词就OK了，比如：He is 16. 可变为 Is he 16? I am a student. 可变为 Are you a student ?
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